Imagine if the data that has been painstakingly collected over a long period turns out to be corrupted or lost. Of course, it isn’t delightful.
Well, in the world of information technology, there is the term “backup”, which is a backup process by copying data so that it can be reused in the event of damage or loss.
Therefore, regular data backup is definitely needed for companies. Then, what is a backup, its functions and benefits?
Backup is the process of copying and transferring the data into secondary storage, whether it’s physical or cloud. Companies have to use data backup to make sure that their information will always stay protected and safe.
The Functions of Data Backup
First, to restore data if the data is lost, either because it is deleted or because it is corrupted. Second, to restore data to a certain point in the past. By doing a backup, then when one of the storage media is damaged, lost, or exposed to the virus, essential data that is owned would not be lost nor damaged, and anytime and anywhere can still be accessed easily.
So, the primary function of backup is to make a backup of data that is damaged, lost or cannot be reaccessed. The cause can be due to user error or other factors, such as damaged devices, virus or malware attacks, corrupted data, natural disasters and so on.
Backup can also function as a disaster recovery plan, namely to restore data. Basically, backup aims to restore data that is lost, damaged, corrupt, or infected with a virus. You will never know what things might happen to your storage media, so it would be better if you have not only one data storage media. That way, if the primary data is somehow lost or broken, the company can always restore the data backup.
Because of its function, the backup process requires users to duplicate data, which ultimately consumes storage media capacity. This encourages the discovery of technologies for efficient storage of backup data, such as deduplication and compression. Companies can also scan computer with best PC cleaners, to be safer in the future. Regular scanning makes it possible to detect any viruses within the files. Once found, they can be treated immediately before they cause further damage.
The Components of Data Backup
The components of a backup system consist of:
- Backup Software, which is a tool used to run the backup process;
- Client Backup, namely the computer that contains the data to be backed up;
- Backup Server; a server that is used to manage the backup process, such as setting a backup schedule and so on.
- Also, Backup Media, the standard media such as tape, magnetic disc, optical disc, and others.
- Backup Engine, which is a machine for backing up data. This machine is connected to the backup server and controlled by the backup engine and backup software. This backup engine determines the type of backup media to use.
Data Backup Strategies
There are currently three types of strategies or schemes when performing backups.
First, Full Backup. All data is backed up at a particular time. This is the most straightforward backup strategy because it copies all files from a system onto storage or other backup media. In other words, a full backup is a complete copy of the files owned by a computer system or a disk; it can also include files related to the operating system other than the files belonging to the user.
Second, Incremental Backup. Only data changes are backed up at any given time. This is the most frequently chosen backup strategy. In this strategy, the system only copies the files that have changed since the previous backup. This incremental backup is good to use when the full backup scheme is too heavy because the files are too many, and only a small part of the data changes every day. In this case, doing a backup only for small files will be faster than having to do a full backup.
Third, Differential Backup, that is, every time there is a change, the data is backed up continuously for some time. For example, data backup starts on Monday, and then data changes on Monday will be backed up. Tuesday’s backup will continue to backup data changes Tuesday. So Tuesday’s backup is Monday’s backup plus Tuesday’s data backup.
Well, if the company is disciplined in doing data backup, then there are several benefits that can be obtained. First, as a preventive measure against data lost files and corrupted data (returning to a previous condition).